As I have said before I like the Dell Streak 5′s form factor. A jacket pocket-sized tablet is fine by me. No – the real problem with the Streak wasn’t that it was “too big for a phone, too small for a tablet” but rather that it needed recharging all the time. True mobility requires a long battery life, which is perhaps where Zuckerburg was wrong about the iPad -of course its a mobile device-you can carry it around for a day without a charge.
The Streak on the other hand is never really happy unless its plugged in for recharging. I think Dell will make some great devices, and 5 inch may be a great form factor for mobile workers…. but Dell needs to hire some engineers to be remorseless about energy efficiency. The iPad is frankly astounding in terms of energy consumption; at rest it basically doesn’t draw power – we should put the team in charge of global power efficiency. The Android community, meanwhile, needs to learn the power lesson from Apple.